Most problems are free forever. Pro unlocks the deep-end — additional Pro-only problems, unlimited compile checks and submissions, and editorials for every problem.
Free
$0 forever
No credit card required
Everything you need to start practicing.
All free problems
50 compile checks and 10 submissions per day
In-browser AL editor with completion and hover docs
Leaderboard and streaks
Pro
$8.33 / month
$100 billed yearly
save $20
Everything in Free, plus the deep end.
Additional Pro-only problems
Unlimited compile checks and submissions — no daily caps
View solutions
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faq
Are there usage limits on the free plan?
Yes — the free plan allows 50 compile checks and 10 submissions per day. Compile checks that your code builds; Submit grades it against the full test suite. Pro lifts both caps entirely.
Can I cancel anytime?
Yes. Pro is a simple subscription — cancel whenever you like and you keep access until the end of the period you paid for. Your solved history stays either way.